Same setup as the first video but this video gives you a better idea of how long I can pul
Same setup as the first video but this video gives you a better idea of how long I can pull the arcs out. Pulling them straight up gives me a longer distance since the hot ionized air rises up with the arc instead of away from it when I pull them out horizontally. Enjoy!
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Added: 1 month ago
Views: 65
This video shows the performance I get form a homemade flyback secondary. The secondary co
This video shows the performance I get form a homemade flyback secondary. The secondary construction was really simple. Basically it started with a clear plastic tube which I used as a coil form. Each layer has just a bit over 100 turns on each. Each layer has a few turns less than the one before it to reduce capacitance between layers. There are nine layers, for about 1000turns of 32awg mag wire. Each layer is insulated using clear package tape, about 5 layers of it. As you can clearly see from the video this isn't anywhere near the insulation it needs (massive corona coming from the secondary). I usually run this secondary in a heavy load situation so it doesn't really matter that it has this problem because it is rarely ran in open circuit. I'm planning on winding another identical secondary but this time with better insulation.
The flyback is driven with my new ZVS driver. More info on it here. http://sparrow338.googlepages.com/zvsdriver
Driver imput is around 20-24 volts @ 6 amps.
Flyback output (guessing) is around 8-10kV. With quite a bit of amperage. I can pull the arcs out around 3-4 inches. Enjoy!
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Added: 1 month ago
Views: 128
This is a video of a medium sized flyback from a larger TV. It is driven using a ZVS (zero
This is a video of a medium sized flyback from a larger TV. It is driven using a ZVS (zero voltage switching) driver. The difference with this video and the others is that the driver uses higher power FETs and the driver itself is running off a higher voltage. For more info on the driver try this link to my website (The new driver is near the bottom of the page) http://sparrow338.googlepages.com/zvsdriver
The driver is being ran from two 12-0-12 volt@2amp transformers. The two transformers are in series so I get about 48volts under a light load. When driving the ZVS the voltage drops to about 22-24 volts@~6amps. This is a really underpowered supply for this job, and I'm working on a new one that will replace it. The voltage coming out of the flyback is around (just guessing) 20kV. Arcs can be pulled out almost 4-5 inches. Under this operation for about a minute run the FETs barely get warm. Enjoy!
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Added: 1 month ago
Views: 81
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This is a video of a HV pendulum. How it works is that one soda can is charged up to a hig
This is a video of a HV pendulum. How it works is that one soda can is charged up to a high positive potential and the other is at a low potential compared with the other. The metal ring in the middle, which is neutral at first is attracted to the positive can on the left. Once the ring touches the can it is charged up to the same potential as the can and thus is now attracted to can with the lower potential or more negative voltage. Once the ring touches the can on the right it has now discharged all of its potential and thus is neutral again and is attracted to the can on the left, which now has a higher potential than the ring. This makes the ring swing back and forth creating a pendulum motion. To make this work I connected one can to ground(right can) and one to the output of my C&W voltage multiplier(left can). I would imagine the potential between the two can's is around 40-60kV, but I'm not completely sure. As you can see the ring swings nicely until I discharge the left can to ground and then it suddenly stops swinging. It will go for over 5 minutes on one charge. I just flick the multiplier on for less than a second and they turn it off to charge up the soda can. It could probably swing for longer if I had a better bearing on the ring so that it could swing more freely. Enjoy!
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Added: 2 months ago
Views: 157
This is the HV flyback transformer that is the power supply for my 5 stage C&W multiplier.
This is the HV flyback transformer that is the power supply for my 5 stage C&W multiplier. The flyback core is form a very large flyback from a old color TV. I removed the stock primary/secondary and wound my own. The primary is 5+5 turns centered taped. The secondary is made using 32awg. heavy duty magnet wire. There are nine layers, each layer has about 150 turns on the first layer to about 100 turns on the last layer. This is done to reduce the capacitance between layers. Each layer is wrapped with several layers of transparent tape. This isn't a great insulator for HV but it doesn't really matter just as long as the trans. always has a load on it. You can see in the video that the secondary has heavy corona when there is no load (well I guess you can't since YouTube changed the quality..). This would normally be a problem but I will never run it again in this situation so it doesn't really matter. The flyback is driven by a ZVS driver being ran from about 24 volts. With a higher voltage in I would get a much higher voltage out. The output I would guess is about 5-10kV max with quite a bit of amperage. The core is a half in thick to give you an idea of it's size.
Edit: If you watch it in high quality mode you can see some of the corona from the secondary at the beginning. Just a quick flash near the bottom of the secondary.
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Added: 2 months ago
Views: 121
This is my C&W high voltage multiplier. The power supply is two 12-0-12 VAC @ 2 Amp transf
This is my C&W high voltage multiplier. The power supply is two 12-0-12 VAC @ 2 Amp transformers that are rectified and then connected in parallel to give me more amperage. This is the power supply for a zero voltage switching (ZVS) flyback driver. The ZVS drives a rather large home would flyback that in turn drives the multiplier. The multiplier is made up of 10 35kV @ 1nF caps, and 10 20kV diode strings that are made out of 1n4007-8 diodes in series to give me a higher voltage rating. The output of the multiplier is connected to a string of 10 10Watt 750 ohm power resistors. These are used to limit the current a bit so I don't kill the diodes (at least on right away anyways) Although I'm not sure of the input voltage the out put can jump about 13cm max, so it is probably around 130kV being generated by the multiplier. This video shows sparks jumping just over 12cm. The video doesn't really give you a good idea about how loud this thing is. I would say they are about as loud as a .22 cal gunshot. Enjoy!
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Added: 2 months ago
Views: 192
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This is a video of a Jacob's ladder that is driven by a 12kV @ 30ma, or 12/30, Neon Sign T
This is a video of a Jacob's ladder that is driven by a 12kV @ 30ma, or 12/30, Neon Sign Transformer, or NST. The 'ladder' is made using 3/16" soft copper tubing. The bottom gap is about 1/4" and the 'ladder' widens up to about 2" at the top, which is about the most you can pull an arc out on this transformer.
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Added: 2 months ago
Views: 61
This is a pretty simple Lego crawler I made. It is made up of tree "segments" each of whic
This is a pretty simple Lego crawler I made. It is made up of tree "segments" each of which has its own worm gear drive and tracks. All three segments are driven from one motor and one main shaft. All of the segments are attached to each other with a pivot in between them so they can move "freely" of each other. At each pivot point the drive shaft has two universal joints that allow power to continue to be feed to the segments while they are at odd angels and such. The shaft and motor have the ability to slide forward and backward to allow the universal joints to stay centered over the pivot points as the distance between the gearboxes changes. I'm planning on using a longer wire and mounting the battery box at the front to better disperse the weight throughout the crawler, but for now this set up works fine. Please feel free to ask any questions about the crawler. Enjoy!
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Added: 5 months ago
Views: 1,129
This is a Lego crawler ("tank") I designed and built around the new Lego Power Function co
This is a Lego crawler ("tank") I designed and built around the new Lego Power Function components. For this design I used 2 XL motor, one to drive each side of the crawler. I'm using Lego's new tracks along with the small black sprockets. The new Lego motors have enough power to easily drive the tracks. Although I started with just one set of tracks per side, I would like it to perform well in snow/sand so I ending up doubling the number of tracks. With the current track set up I get 37.5 square inches of, on ground, surface area. This also gives it much more traction. I made this video to give anyone interested in these new Lego components an idea of their speed/power.
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Added: 5 months ago
Views: 4,474
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